diff --git a/backend/core/config.py b/backend/core/config.py
index c1ac2dd0..cc6f2b35 100644
--- a/backend/core/config.py
+++ b/backend/core/config.py
@@ -1,9 +1,6 @@
-import os
-from jsmin import jsmin
 from fastapi import FastAPI, Request, Response
 from middleware import decode_token
 from fastapi.responses import FileResponse
-from db.connection import SessionLocal
 
 from routes.user import user_route
 from routes.tag import tag_route
@@ -18,32 +15,21 @@
 from routes.visualization import visualization_route
 from routes.reference_data import reference_data_routes
 
+import os
+from jsmin import jsmin
+from db.connection import SessionLocal
+
 from models.business_unit import BusinessUnit
 from models.commodity_category import CommodityCategory
 from models.currency import Currency
 from models.country import Country
 
 
-app = FastAPI(
-    root_path="/api",
-    title="IDH-IDC",
-    description="Auth Client ID: 99w2F1wVLZq8GqJwZph1kE42GuAZFvlF",
-    version="1.0.0",
-    contact={
-        "name": "Akvo",
-        "url": "https://akvo.org",
-        "email": "dev@akvo.org",
-    },
-    license_info={
-        "name": "AGPL3",
-        "url": "https://www.gnu.org/licenses/agpl-3.0.en.html",
-    },
-)
-
 JS_FILE = "./config.min.js"
 
 
 def generate_config_file() -> None:
+    print("[START] Generating config")
     session = SessionLocal()
     env_js = "var __ENV__={"
     env_js += 'client_id:"{}"'.format(os.environ["CLIENT_ID"])
@@ -51,9 +37,11 @@ def generate_config_file() -> None:
     env_js += "};"
     min_js = jsmin("".join([env_js, ""]))
     business_units = session.query(BusinessUnit).all() or []
+    session.flush()
     if business_units:
         business_units = [bu.serialize for bu in business_units]
     commodity_categories = session.query(CommodityCategory).all() or []
+    session.flush()
     if commodity_categories:
         commodity_categories = [
             cc.serialize_with_commodities for cc in commodity_categories
@@ -61,6 +49,7 @@ def generate_config_file() -> None:
     currencies = (
         session.query(Currency.abbreviation, Currency.country).distinct() or []
     )
+    session.flush()
     if currencies:
         currencies = [
             {"value": c[0], "label": c[0], "country": c[1]} for c in currencies
@@ -69,6 +58,7 @@ def generate_config_file() -> None:
         session.query(Country).filter(Country.parent.is_(None)).all()
         or []  # noqa
     )
+    session.flush()
     if countries:
         countries = [c.to_dropdown for c in countries]
     min_js += "var master={};".format(
@@ -83,6 +73,25 @@ def generate_config_file() -> None:
     )
     with open(JS_FILE, "w") as jsfile:
         jsfile.write(min_js)
+    print("[DONE] Config generated")
+    session.close()
+
+
+app = FastAPI(
+    root_path="/api",
+    title="IDH-IDC",
+    description="Auth Client ID: 99w2F1wVLZq8GqJwZph1kE42GuAZFvlF",
+    version="1.0.0",
+    contact={
+        "name": "Akvo",
+        "url": "https://akvo.org",
+        "email": "dev@akvo.org",
+    },
+    license_info={
+        "name": "AGPL3",
+        "url": "https://www.gnu.org/licenses/agpl-3.0.en.html",
+    },
+)
 
 
 # Routes register
@@ -118,7 +127,6 @@ def health_check():
     description="static javascript config",
 )
 async def main(res: Response):
-    generate_config_file()
     res.headers["Content-Type"] = "application/x-javascript; charset=utf-8"
     return JS_FILE
 
diff --git a/backend/db/crud_case.py b/backend/db/crud_case.py
index 2f1db208..c83bdffb 100644
--- a/backend/db/crud_case.py
+++ b/backend/db/crud_case.py
@@ -171,6 +171,7 @@ def update_case(session: Session, id: int, payload: CaseBase) -> CaseDict:
         for ct in prev_tags:
             session.delete(ct)
             session.commit()
+            session.flush()
         # store new tags
         for tag_id in payload.tags:
             tag = CaseTag(tag=tag_id, case=case.id)
@@ -290,9 +291,11 @@ def delete_case(session: Session, case_id: int):
     for sa in segment_answer:
         session.delete(sa)
         session.commit()
+        session.flush()
     for s in segment:
         session.delete(s)
         session.commit()
+        session.flush()
 
     # visualization
     visualization = (
@@ -303,6 +306,7 @@ def delete_case(session: Session, case_id: int):
     for vis in visualization:
         session.delete(vis)
         session.commit()
+        session.flush()
 
     # case_commodity
     case_commodity = (
@@ -313,12 +317,14 @@ def delete_case(session: Session, case_id: int):
     for cc in case_commodity:
         session.delete(cc)
         session.commit()
+        session.flush()
 
     # case tag
     case_tag = session.query(CaseTag).filter(CaseTag.case == case_id).all()
     for ct in case_tag:
         session.delete(ct)
         session.commit()
+        session.flush()
 
     # user case
     user_case_access = (
@@ -329,6 +335,7 @@ def delete_case(session: Session, case_id: int):
     for uca in user_case_access:
         session.delete(uca)
         session.commit()
+        session.flush()
 
     session.delete(case)
     session.commit()
diff --git a/backend/db/crud_reset_password.py b/backend/db/crud_reset_password.py
index e722cde7..4fe5fd0a 100644
--- a/backend/db/crud_reset_password.py
+++ b/backend/db/crud_reset_password.py
@@ -36,3 +36,4 @@ def get_reset_password(session: Session, url: str) -> ResetPasswordBase:
 def delete_reset_password(session: Session, url: str) -> None:
     session.query(ResetPassword).filter(ResetPassword.url == url).delete()
     session.commit()
+    session.flush()
diff --git a/backend/db/crud_segment.py b/backend/db/crud_segment.py
index 339fae87..58739750 100644
--- a/backend/db/crud_segment.py
+++ b/backend/db/crud_segment.py
@@ -71,6 +71,7 @@ def update_segment(
             for sa in prev_segment_answers:
                 session.delete(sa)
             session.commit()
+            session.flush()
         # handle segment answers
         for val in payload.answers:
             segment_answer = SegmentAnswer(
diff --git a/backend/db/crud_user.py b/backend/db/crud_user.py
index 610cabe6..49b6b496 100644
--- a/backend/db/crud_user.py
+++ b/backend/db/crud_user.py
@@ -117,6 +117,7 @@ def update_user(
         for ut in prev_user_tags:
             session.delete(ut)
             session.commit()
+            session.flush()
         # add new user tags
         for tag in payload.tags:
             user_tag = UserTag(user=user.id, tag=tag)
@@ -131,6 +132,7 @@ def update_user(
         for uc in prev_user_cases:
             session.delete(uc)
             session.commit()
+            session.flush()
         # add new user case access
         for proj in payload.cases:
             case_access = UserCaseAccess(
@@ -153,6 +155,7 @@ def update_user(
         for bu in prev_user_bus:
             session.delete(bu)
             session.commit()
+            session.flush()
         # add new user business units
         for bu in payload.business_units:
             business_unit = UserBusinessUnit(
diff --git a/backend/dev.sh b/backend/dev.sh
index 7af02b0d..8d012005 100755
--- a/backend/dev.sh
+++ b/backend/dev.sh
@@ -5,5 +5,4 @@ pip -q install --cache-dir=.pip -r requirements.txt
 pip check
 
 alembic upgrade head
-
 uvicorn main:app --reload --port 5000
diff --git a/backend/generate_config.sh b/backend/generate_config.sh
new file mode 100755
index 00000000..fd6d3c2f
--- /dev/null
+++ b/backend/generate_config.sh
@@ -0,0 +1,5 @@
+#!/usr/bin/env bash
+set -eu
+
+# Run the Python command to import and execute the function
+python -c "from core.config import generate_config_file; generate_config_file(); exit()"
diff --git a/backend/main.py b/backend/main.py
index c917af33..d77ab885 100644
--- a/backend/main.py
+++ b/backend/main.py
@@ -1,4 +1,5 @@
 import uvicorn
+
 from db.connection import engine, Base
 from core.config import app, generate_config_file
 
diff --git a/backend/models/business_unit.py b/backend/models/business_unit.py
index 9739ca56..a3251c11 100644
--- a/backend/models/business_unit.py
+++ b/backend/models/business_unit.py
@@ -1,9 +1,10 @@
-from db.connection import Base
-from sqlalchemy import Column, Integer, String
-from sqlalchemy.orm import relationship
 from typing import Optional
 from typing_extensions import TypedDict
+from sqlalchemy import Column, Integer, String
+from sqlalchemy.orm import relationship
+
 from pydantic import BaseModel
+from db.connection import Base
 
 
 class BusinessUnitDict(TypedDict):
@@ -18,7 +19,7 @@ class BusinessUnit(Base):
     name = Column(String, nullable=False, unique=True)
 
     business_unit_users = relationship(
-        'UserBusinessUnit',
+        "UserBusinessUnit",
         cascade="all, delete",
         passive_deletes=True,
         back_populates="business_unit_detail"
diff --git a/backend/models/reset_password.py b/backend/models/reset_password.py
index bda803d9..16daa6e3 100644
--- a/backend/models/reset_password.py
+++ b/backend/models/reset_password.py
@@ -18,7 +18,7 @@ class ResetPasswordBase(BaseModel):
     expired: bool
 
     class Config:
-        orm_mode = True
+        from_attributes = True
 
 
 class ResetPassword(Base):
diff --git a/backend/models/user_business_unit.py b/backend/models/user_business_unit.py
index a9b7994c..7935f6f9 100644
--- a/backend/models/user_business_unit.py
+++ b/backend/models/user_business_unit.py
@@ -1,12 +1,12 @@
 import enum
 
-from db.connection import Base
-from sqlalchemy import Column, ForeignKey, Integer, Enum
-from sqlalchemy.orm import relationship
 from typing import Optional
 from typing_extensions import TypedDict
+from sqlalchemy import Column, ForeignKey, Integer, Enum
+from sqlalchemy.orm import relationship
+
 from pydantic import BaseModel
-from models.business_unit import BusinessUnit
+from db.connection import Base
 
 
 class UserBusinessUnitRole(enum.Enum):
@@ -37,10 +37,10 @@ class UserBusinessUnit(Base):
 
     id = Column(Integer, primary_key=True, nullable=False)
     user = Column(Integer, ForeignKey("user.id"), nullable=False)
-    business_unit = Column(Integer, ForeignKey("business_unit.id"), nullable=False)
-    role = Column(
-        Enum(UserBusinessUnitRole, name="user_business_unit_role"), nullable=False
-    )
+    business_unit = Column(
+        Integer, ForeignKey("business_unit.id"), nullable=False)
+    role = Column(Enum(
+        UserBusinessUnitRole, name="user_business_unit_role"), nullable=False)
 
     user_business_unit_user_detail = relationship(
         "User",
@@ -49,7 +49,7 @@ class UserBusinessUnit(Base):
         back_populates="user_business_units",
     )
     business_unit_detail = relationship(
-        BusinessUnit,
+        "BusinessUnit",
         cascade="all, delete",
         passive_deletes=True,
         back_populates="business_unit_users",
@@ -60,7 +60,7 @@ def __init__(
         business_unit: int,
         role: UserBusinessUnitRole,
         id: Optional[int] = None,
-        user: Optional[int] = None,
+        user: Optional[int] = None
     ):
         self.id = id
         self.user = user
diff --git a/backend/seeder/commodity.py b/backend/seeder/commodity.py
index 5e5ab44c..248bbb3d 100644
--- a/backend/seeder/commodity.py
+++ b/backend/seeder/commodity.py
@@ -47,6 +47,7 @@ def seeder_commodity(session: Session):
     if category_objects:
         session.bulk_save_objects(category_objects, update_changed_only=True)
         session.commit()
+        session.flush()
     print("[DATABASE UPDATED]: Commodity Category")
 
     commodities = commodities[["id", "group_id", "name"]]
@@ -73,6 +74,7 @@ def seeder_commodity(session: Session):
     if commodity_objects:
         session.bulk_save_objects(commodity_objects, update_changed_only=True)
         session.commit()
+        session.flush()
     print("[DATABASE UPDATED]: Commodity")
     session.close()
 
diff --git a/backend/setup.cfg b/backend/setup.cfg
index 1e39ded3..def45731 100644
--- a/backend/setup.cfg
+++ b/backend/setup.cfg
@@ -2,6 +2,9 @@
 max-line-length = 88
 ignore = E203, E266, E501, W503
 select = E,W,F
+per-file-ignores =
+    # imported but unused
+    __init__.py: F401
 
 [tool.black]
 line-length = 88